Studies on the life history of the population of an evergreen herb,Pyrola japonica, on the forest floor in a warm temperate region

1989 ◽  
Vol 102 (4) ◽  
pp. 521-532 ◽  
Author(s):  
Hiroshi Koizumi
Keyword(s):  
Life History ◽  
Forest Floor ◽  
Temperate Region ◽  
History Of ◽  
Pyrola Japonica ◽  
Warm Temperate

Cold tolerance of gametophytes and sporophytes of some cool temperate ferns native to Hokkaido

1981 ◽  
Vol 59 (5) ◽  
pp. 604-608 ◽  
Author(s):  
Toshiyuki Sato ◽  
Akira Sakai
Keyword(s):  
Life History ◽  
Drought Tolerance ◽  
Water Content ◽  
Cold Tolerance ◽  
Room Temperature ◽  
Freezing Resistance ◽  
Temperate Region ◽  
Cool Temperate ◽  
Cold Tolerant ◽  
History Of

To study the phenological adaptation of the life history of ferns to colder regions, the freezing resistance of gametophytes and sporophytes of 14 cool temperate region ferns native to Hokkaido was evaluated in Sapporo. Moreover, drought tolerance of gametophytes of some cool temperate ferns was elucidated. The mature sporophytes were hardy from −5 to −20 °C in most species. However, gametophytes of most species were tolerant to below −40 °C and regrew into normal gametophytes in a month at room temperature. Most of the gametophytes survived well after dehydration to 2–10% water content. The gametophytic generation was more cold tolerant than the sporophytic one. Thus, the gametophytic generation, rather than the sporophytic, might be the generation that survives cold temperature in the field.

Experimental life history of Echinostoma cinetorchis

1990 ◽  
Vol 28 (1) ◽  
pp. 39 ◽  
Author(s):  
S H Lee ◽  
J Y Chai ◽  
S T Hong ◽  
W M Sohn
Keyword(s):  
Life History ◽  
History Of
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